CAJ | 학술논문

在水泥生料中分别添加不同比例的废弃混凝土，并在1250℃、1350℃、1450℃下煅烧，模拟水泥烧成的部分过程，利用XRD、SEM 等表征手段考察分析了混凝土掺入比例对水泥熟料煅烧过程主要矿物形成的影响，并将煅烧生成的水泥熟料与标准熟料进行了对比分析。结果表明，在不同煅烧温度下烧成的水泥熟料中主要矿物的X RD特征峰明显，矿物形成正常，并与对比试样水泥熟料矿物的化学成分相近。不同比例混凝土代替部分生料烧制的水泥熟料组成及形貌的变化有明显的区别，30％混凝土替代部分生料烧制的水泥熟料因Al、Fe和Si元素含量较高而出现主要矿物粘结和熔蚀现象，阻碍C3 S的形成，水泥矿物发育较差，而15％混凝土替代部分生料烧制的水泥熟料矿物发育良好，主要矿物粘结和熔蚀较少。
재수니생료중분별첨가불동비례적폐기혼응토，병재1250℃、1350℃、1450℃하단소，모의수니소성적부분과정，이용XRD、SEM 등표정수단고찰분석료혼응토참입비례대수니숙료단소과정주요광물형성적영향，병장단소생성적수니숙료여표준숙료진행료대비분석。결과표명，재불동단소온도하소성적수니숙료중주요광물적X RD특정봉명현，광물형성정상，병여대비시양수니숙료광물적화학성분상근。불동비례혼응토대체부분생료소제적수니숙료조성급형모적변화유명현적구별，30％혼응토체대부분생료소제적수니숙료인Al、Fe화Si원소함량교고이출현주요광물점결화용식현상，조애C3 S적형성，수니광물발육교차，이15％혼응토체대부분생료소제적수니숙료광물발육량호，주요광물점결화용식교소。
Different proportions of waste concrete being added into cement raw meal respectively , were sintered at 1250℃ ,1350℃ ,and 1450℃ to simulate part of the cement sintering process ,the im-pacts of different proportions of concretes on cement calcination process and main minerals information were examined by XRD and SEM tools ,and the calcined cement clinkers were compared and analyzed with standard clinker .The results showed that the XRD characteristic peaks of main minerals in the cement clinkers calcined at different temperatures were obvious ,the minerals were informed normally , and the chemical ingredients of minerals were approximate to sample cement clinker .The change of the composition and morphology of cement clinker calcined with different proportions of concrete replaced partial the raw material was great .The adhesive and corrosive phenomenon of main minerals was pres-ented ,as the cement clinkers calcined by 30% concretes replacing partial raw material contained high contents of Al ,Fe and Si elements ,the information of C3 S was blocked and the cement mineral was in-formed poorly ,in contrast ,the adhesive and corrosive phenomenon of main mineral appeared less while the cement mineral was informed better the cement clinkers calined in the 15% concretes repla-cing partial raw material .